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kozerog [31]
4 years ago
11

When converting from kilometers to meters, the decimal is moved _______.

Physics
1 answer:
Klio2033 [76]4 years ago
3 0
...3 times to the right (the number is timed by 1000).
Hope this helps :)
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Calculate the energy transfers in joules by a 4kW by appliances left for 2 minutes
Marianna [84]

Answer: 480 kJ

Explanation: Energy = power · time

E = Pt = 4000 W · 120 s = 480 000 J

5 0
3 years ago
As a freely falling object picks up downward speed, what happens to the power supplied by the gravitational force?
vitfil [10]

We will start from the definition of power in terms of the Force. Power could be described as the change of energy in an instant of time. Considering that Energy is the product between the Force and the distance traveled we would arrive at the expression

P = \frac{E}{t}

P = \frac{F*h}{t}

Here,

F = Force

h = Height

t = Time

As there is no external force, apart from the force of gravity, and this, is constant during the course of the object we will also have to be constant power and therefore this during its course will be the same. The correct answer is (1)

4 0
4 years ago
State the sources of alternating current <br>​
Serga [27]

Answer:

hudroelectricity

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4 0
3 years ago
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What is the peak emf generated (in V) by rotating a 1000 turn, 42.0 cm diameter coil in the Earth's 5.00 ✕ 10−5 T magnetic field
ELEN [110]

Answer:

5.77 Volt

Explanation:

N = 1000, Diameter = 42 cm = 0.42 m,  t = 12 ms = 12 x 10^-3 s

Change in magnetic field, B = 5 x 10^-5 T

The peak value of emf is given by

e = N x dФ / dt

e = N x A x dB/dt

e = (1000 x 3.14 x 0.21 x 0.21 x 5 x 10^-5) / (1.2 x 10^-3)

e = 5.77 Volt

3 0
3 years ago
How do I solve this???
Naya [18.7K]

The projectile maintains its horizontal component of speed because there's nothing exerting any horizontal force on it. <em>(b) </em>

Gravity has no effect on horizontal motion.

4 0
3 years ago
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